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Kak and Slaney helped me figure out the bug in my FDK cone beam reconstruction code during MSc. If it ain't Kak, you can have it back, I always say. Harry - when I was taught CT, the prof did a live demonstration of back projection and filtered</div>
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Kak and Slaney helped me figure out the bug in my FDK cone beam reconstruction code during MSc. If it ain't Kak, you can have it back, I always say.</div>
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Harry - when I was taught CT, the prof did a live demonstration of back projection and filtered back projection using matlab, starting from one view, two views, etc. It was memorably illustrative.</div>
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<span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">Assistant Professor, Medical Physics Unit and Department of Oncology, McGill University</span></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list-bounces@lists.osu.edu> on behalf of Szczykutowicz, Timothy P via Intl_dxmedphys_wd_osu_list
<intl_dxmedphys_wd_osu_list@lists.osu.edu><br>
<b>Sent:</b> March 13, 2026 1:55 PM<br>
<b>To:</b> DxMedPhys List <intl_dxmedphys_wd_osu_list@lists.osu.edu><br>
<b>Subject:</b> Re: [Intl_DxMedPhys] Favorite introduction to CT recon?</font>
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Trying again with the attachment as a drive link (first email bounced) https: //drive. google. com/file/d/1CQu0-_onglCBVdL0kxCG0FRp-f_wNEK7/view?usp=sharing Kak and Slaney have the seminal textbook (in my opinion on this) and have math allowing</div>
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Trying again with the attachment as a drive link (first email bounced)</div>
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<a class="x_OWAAutoLink" id="OWA1362a3fe-dfdb-0907-9622-b7faf2b56766" href="https://urldefense.com/v3/__https://drive.google.com/file/d/1CQu0-_onglCBVdL0kxCG0FRp-f_wNEK7/view?usp=sharing__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfQSi0Y8tA$" originalsrc="https://urldefense.com/v3/__https://drive.google.com/file/d/1CQu0-_onglCBVdL0kxCG0FRp-f_wNEK7/view?usp=sharing__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfQSi0Y8tA$">https://drive.google.com/file/d/1CQu0-_onglCBVdL0kxCG0FRp-f_wNEK7/view?usp=sharing</a> </div>
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Kak and Slaney have the seminal textbook (in my opinion on this) and have math allowing a student to code their own CT projections (including how to parameterize elliptical objects), do the filtration, and do the back projection.
<a data-auth="NotApplicable" class="x_OWAAutoLink" id="OWAe6f22d58-b3d1-e2e8-2914-ca174e5ee169" href="https://urldefense.com/v3/__https://www.slaney.org/pct/pct-toc.html__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfSCb9J6TQ$" originalsrc="https://urldefense.com/v3/__https://www.slaney.org/pct/pct-toc.html__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfSCb9J6TQ$">
https://www.slaney.org/pct/pct-toc.html</a> the book is free online. Any CT scientist worth their salt should go through that trial of coding up their own code from start to finish. You can get fancy and even add energy dependence to the spectra and objects
using the spektr toolkit and then discuss beam hardening and so forth as well. <a data-auth="NotApplicable" class="x_OWAAutoLink" id="OWA47e11973-74af-f595-1f40-b6eebe16ad48" href="https://urldefense.com/v3/__https://pmc.ncbi.nlm.nih.gov/articles/PMC4958109/__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfQbyhz5Ng$" originalsrc="https://urldefense.com/v3/__https://pmc.ncbi.nlm.nih.gov/articles/PMC4958109/__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfQbyhz5Ng$">
https://pmc.ncbi.nlm.nih.gov/articles/PMC4958109/</a> I think this is essential to do from scratch to ever really understand how a ct scanner works. A code like this can be used to understand so many things. My professor made us do this when we took CT at
UW, so we are all salty here from UW if you took advanced CT as a course ;) </div>
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The best I have seen in lecture format is from a colleague of mine here at UW, he teaches our CT recon class, "Zhang, Ran" <RZhang3@uwhealth.org> you could ask him for slides or more advice? </div>
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I attached my resident teaching deck on this part of CT, nothing too in depth but if useful for you, great. </div>
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<span style="font-family:Tahoma,sans-serif; font-size:10pt; color:black">Timothy P. Szczykutowicz, Ph.D., DABR<br>
Professor<br>
Departments of Radiology, Medical Physics and BME<br>
University of Wisconsin Madison<br>
Cell# </span><span style="font-family:Tahoma,sans-serif; font-size:10pt; color:blue"><u><a class="x_OWAAutoLink" id="OWAe5b82444-9c51-62a7-0cf6-999af90e19e3" target="_blank" href="tel:(716)%20560-7751" style="color:blue; margin-top:0px; margin-bottom:0px">1-716-560-7751</a></u></span><span style="font-family:Tahoma,sans-serif; font-size:10pt; color:black"><br>
Office# 1-608-263-5729<br>
he/him/his</span></p>
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<b>From:</b> Szczykutowicz, Timothy P <TSzczykutowicz@uwhealth.org><br>
<b>Sent:</b> Friday, March 13, 2026 12:48 PM<br>
<b>To:</b> DxMedPhys List <intl_dxmedphys_wd_osu_list@lists.osu.edu><br>
<b>Subject:</b> Re: [Intl_DxMedPhys] Favorite introduction to CT recon? </div>
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Kak and Slaney have the seminal textbook (in my opinion on this) and have math allowing a student to code their own CT projections (including how to parameterize elliptical objects), do the filtration, and do the back projection.
<a data-auth="NotApplicable" class="x_OWAAutoLink" id="OWAf550438d-e7e2-a87f-aeab-5cef6810f152" href="https://urldefense.com/v3/__https://www.slaney.org/pct/pct-toc.html__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfSCb9J6TQ$" originalsrc="https://urldefense.com/v3/__https://www.slaney.org/pct/pct-toc.html__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfSCb9J6TQ$">
https://www.slaney.org/pct/pct-toc.html</a> the book is free online. Any CT scientist worth their salt should go through that trial of coding up their own code from start to finish. You can get fancy and even add energy dependence to the spectra and objects
using the spektr toolkit and then discuss beam hardening and so forth as well. <a data-auth="NotApplicable" class="x_OWAAutoLink" id="OWAfba053fb-fc16-9ba1-ade8-fc62b82b2e60" href="https://urldefense.com/v3/__https://pmc.ncbi.nlm.nih.gov/articles/PMC4958109/__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfQbyhz5Ng$" originalsrc="https://urldefense.com/v3/__https://pmc.ncbi.nlm.nih.gov/articles/PMC4958109/__;!!KGKeukY!3SjQe99Pi8I71cIkXTcLjUTCgw6RMbDymq_VTyucBNoZO_gOUNh8OWr7rpG16rO0MGakSFvSxZnutfvFBWAIInM9DwEgevR2huYBhe4DsfQbyhz5Ng$">
https://pmc.ncbi.nlm.nih.gov/articles/PMC4958109/</a> I think this is essential to do from scratch to ever really understand how a ct scanner works. A code like this can be used to understand so many things. My professor made us do this when we took CT at
UW, so we are all salty here from UW if you took advanced CT as a course ;) </div>
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The best I have seen in lecture format is from a colleague of mine here at UW, he teaches our CT recon class, "Zhang, Ran" <RZhang3@uwhealth.org> you could ask him for slides or more advice? </div>
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I attached my resident teaching deck on this part of CT, nothing too in depth but if useful for you, great. </div>
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<span style="font-family:Tahoma,sans-serif; font-size:10pt; color:black">Timothy P. Szczykutowicz, Ph.D., DABR<br>
Professor<br>
Departments of Radiology, Medical Physics and BME<br>
University of Wisconsin Madison<br>
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<b>From:</b> Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list-bounces+tszczykutowicz=uwhealth.org@lists.osu.edu> on behalf of Bill Erwin via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list@lists.osu.edu><br>
<b>Sent:</b> Friday, March 13, 2026 12:13 PM<br>
<b>To:</b> Harry Ingleby <hingleby@cancercare.mb.ca><br>
<b>Cc:</b> intl_dxmedphys_wd_osu_list@lists.osu.edu <intl_dxmedphys_wd_osu_list@lists.osu.edu><br>
<b>Subject:</b> Re: [Intl_DxMedPhys] Favorite introduction to CT recon?</div>
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Harry, What source materials have you been using? (Just curious. ) Bill On Thu, Mar 12, 2026 at 2: 37 PM Harry Ingleby via Intl_dxmedphys_wd_osu_list <intl_dxmedphys_wd_osu_list@ lists. osu. edu> wrote: Hi all, I’m teaching the Physics of X-ray</div>
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<div style="direction:ltr">(Just curious.)</div>
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<div style="direction:ltr">On Thu, Mar 12, 2026 at 2:37 PM Harry Ingleby via Intl_dxmedphys_wd_osu_list <<a class="x_OWAAutoLink" id="OWAc5836cdf-cc5f-f27c-cc56-9867ab471d79" href="mailto:intl_dxmedphys_wd_osu_list@lists.osu.edu">intl_dxmedphys_wd_osu_list@lists.osu.edu</a>>
wrote:</div>
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Hi all, I’m teaching the Physics of X-ray Imaging to med phys graduate students, it’s my 5th go-round for this course and I’m still not completely happy with the source materials I use for introducing the basics of CT - line integrals, projections,</div>
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Hi all,</div>
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I’m teaching the Physics of X-ray Imaging to med phys graduate students, it’s my 5<sup>th</sup> go-round for this course and I’m still not completely happy with the source materials I use for introducing the basics of CT - line integrals, projections, sinograms,
Fourier slice theorem, etc. Anyone have any books or papers they particularly like, with clear explanations and a good balance between showing the math and explaining the physical principles?</div>
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Thanks,</div>
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Harry</div>
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Harry Ingleby, PhD, MCCPM</p>
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Imaging Physicist</p>
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CancerCare Manitoba</p>
<p style="direction:ltr; margin:0cm"><span style="font-family:Calibri,sans-serif; font-size:14.6667px; color:rgb(0,0,0)"><a class="x_OWAAutoLink" id="OWA0aab15bb-3636-98f5-3a5c-3b7f0f902d82" href="mailto:hingleby@cancercare.mb.ca" style="margin-top:0px; margin-bottom:0px">hingleby@cancercare.mb.ca</a></span></p>
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